Improvement in ash-sifters



A. A LISGGMB.

Ash-Swims.-

M15337 PatentedAug.11,1874.

vinuasts= mom d I I 1 BY I ATTnnuEvs.

THE GRAFHIC CO PHOTO "L|TH.39B:4-l PARK FLACEJLY.

UNITED STATES PATENT OFFICE.

ALFRED A. LISCOMEOE JERSEY CITY, NEW JERSEY.

IMPROVEMENT m ASH-SIFTEQRS.

Specification forming part of Letters Patent No. 153,971, dated Augustn, 1874; application filed June 6, 1874.

To all whom it may concern:

Be it known that I, ALFRED A. LIscoMB, of Jersey City, in the county ofHudson and State of New Jersey, have invented a new and ImprovedAsh-Sifter, of which the following is a specification:

In the accompanying drawing, Figure 1 represents a vertical longitudinalsection of my improved ash-sifter, taken on the line 0 0 of Fig. 2; andFig. 2, a vertical transverse section of the same on the line a: w ofFig. 1.

Similar letters of reference indicate corresponding parts.

The object of my invention is to furnish a very convenient andtime-saving ash-sifter, by which the ash es are readily separated fromthe unburnt particles of coal and thrown out of the sifter by a simplereversion of the motion, without opening the inelosing-box. My inventionconsists of a siftingdrum, rotating in a suitable box with hinged cover,provided with a stationary lateral wing-plate, with suitableinclination, connecting with a side tube of the drum, and with aninclined wing-plate pivoted near the circumference of the drum, so as toallow the passage and sifting of the ashes when the drum is turned inone direction,while producing, upon reversing the direction of rotation,the contact with the stationary wingplate, and the conveying of theunburnt sifted coal particles along the same to the side tube, fromwhence they issue to the outside by an inclined connecting perforationof the casin g. V

In the drawing, A represents the outer inclos'ing box or casing; B, thedrum, constructed, in the usual manner, with coarse wire-cloth, androtated by a cran k-shaft, a, turning in side bearings of the box A. Thehinged top of the box A is thrown open for placing the ashes, by

a sliding door, b, of the drum, into the interior thereof, to be thenrotated in one direction until the ashes are separated from the unburntparticles settling in the lower part of thebox. A sidewise-projectingtube, 0, is set into a side perforation of the drum, near the shaftthereof, and allowed to swing freely in the box by providing the samewith a corresponding circular recess, d. Tube 0 is preferably made aninclined pivot-rod attached near the circumference of the drum, andrests on a pin, f,

at the side of the drum. The rotation of the drum throws the pivotedwing-plate, at each revolution, in contact with the stationary 1nclinedplate, allowing the passage of the ashes when the drum is turned in suchdirection that the weight is thrown on the rear side of the wing-plate;but when themotion of the drum is reversed the pivoted plate rests onthe stationary wing-plate and carries the sifted particles upward andthen alongthe inclined plane formed by the plates, first toward thecenter, and then, by theirside inclination, to the issuing-tube and theexit-aperture of the box, transmitting thereby the sifted coal particlesin an instant to the outside, without necessitating the opening of thebox or the taking out and opening of the drum. Thus the siftingisaccomplished without dust, and the coal particles are furnished forfurther use without any smudging or further handling of the sifterdrum.

Having thus described my invention, I claim as new and desire to secureby Letters Patent As an improvement in ash-sifters, the combination ofinclosing-box A, having issuingaperture 0, with rotating drum B,provided with side projecting tube 0 and stationary and pivoted lateralwing-plates D and E, arranged substantial-ly in the manner and for thepurpose set forth.

ALFRED A. LISOOMB.

Witnesses PAUL GoEPEL, T. B. MOSHER.

